Question

Use the quadratic formula to find the exact solutions of x2 − 9x + 5 = 0.

x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a

Answer 1

`(9\pm√(61))/(2)`

Explanation:

`\displaystyle x=(-b\pm√(b^2-4ac))/(2a)=(-(-9)\pm√((-9)^2-4(1)(5)))/(2(1))=(9\pm√(81-20))/(2)\\\\=(9\pm√(61))/(2)`